That's... not what feudalism is in the BattleTech universe. Like, at all. I suggest reading page 4 of Era Digest: Age of War to get the actual definition of feudalism as it pertains to this setting, because it's not at all what you're suggesting.
There is exactly zero evidence that BattleTech's neo-feudalism has resulted in normalized, societal-level sexual abuse. In fact, the only non-Clan canon examples I can think of off the top of my head that involve sexual abuse (Caleb's rape of Danai, Daoshen's incestuous abuse of Ilsa) are very, very frowned upon in-universe and not considered "the norm".
Let's put it in more practical terms:
While on paper every girl/boy of inappropriate age is fully in their right to refuse advances of some geezer with surname Davion, in practice they would be expected to simply close their eyes and think of Federated Suns
Feel free to insert any faction or ruling house of your choosing
People who own entire planets/systems/interstellar nations are not free of debauchery and corruption
Even a random nobody in a white van IRL is not free of it
This is not Clan issue or Battletech issue, it's human society issue
We can go digging deeper into this but in that case everyone should keep in mind that ensuing fallout will be hitting all factions available